diff options
Diffstat (limited to 'hw/virtio-pci.c')
| -rw-r--r-- | hw/virtio-pci.c | 1514 |
1 files changed, 0 insertions, 1514 deletions
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c deleted file mode 100644 index 943b429d94..0000000000 --- a/hw/virtio-pci.c +++ /dev/null @@ -1,1514 +0,0 @@ -/* - * Virtio PCI Bindings - * - * Copyright IBM, Corp. 2007 - * Copyright (c) 2009 CodeSourcery - * - * Authors: - * Anthony Liguori <aliguori@us.ibm.com> - * Paul Brook <paul@codesourcery.com> - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - * Contributions after 2012-01-13 are licensed under the terms of the - * GNU GPL, version 2 or (at your option) any later version. - */ - -#include <inttypes.h> - -#include "hw/virtio/virtio.h" -#include "hw/virtio/virtio-blk.h" -#include "hw/virtio/virtio-net.h" -#include "hw/virtio/virtio-serial.h" -#include "hw/virtio/virtio-scsi.h" -#include "hw/virtio/virtio-balloon.h" -#include "hw/pci/pci.h" -#include "qemu/error-report.h" -#include "hw/pci/msi.h" -#include "hw/pci/msix.h" -#include "hw/loader.h" -#include "sysemu/kvm.h" -#include "sysemu/blockdev.h" -#include "hw/virtio-pci.h" -#include "qemu/range.h" -#include "hw/virtio/virtio-bus.h" - -/* from Linux's linux/virtio_pci.h */ - -/* A 32-bit r/o bitmask of the features supported by the host */ -#define VIRTIO_PCI_HOST_FEATURES 0 - -/* A 32-bit r/w bitmask of features activated by the guest */ -#define VIRTIO_PCI_GUEST_FEATURES 4 - -/* A 32-bit r/w PFN for the currently selected queue */ -#define VIRTIO_PCI_QUEUE_PFN 8 - -/* A 16-bit r/o queue size for the currently selected queue */ -#define VIRTIO_PCI_QUEUE_NUM 12 - -/* A 16-bit r/w queue selector */ -#define VIRTIO_PCI_QUEUE_SEL 14 - -/* A 16-bit r/w queue notifier */ -#define VIRTIO_PCI_QUEUE_NOTIFY 16 - -/* An 8-bit device status register. */ -#define VIRTIO_PCI_STATUS 18 - -/* An 8-bit r/o interrupt status register. Reading the value will return the - * current contents of the ISR and will also clear it. This is effectively - * a read-and-acknowledge. */ -#define VIRTIO_PCI_ISR 19 - -/* MSI-X registers: only enabled if MSI-X is enabled. */ -/* A 16-bit vector for configuration changes. */ -#define VIRTIO_MSI_CONFIG_VECTOR 20 -/* A 16-bit vector for selected queue notifications. */ -#define VIRTIO_MSI_QUEUE_VECTOR 22 - -/* Config space size */ -#define VIRTIO_PCI_CONFIG_NOMSI 20 -#define VIRTIO_PCI_CONFIG_MSI 24 -#define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \ - VIRTIO_PCI_CONFIG_MSI : \ - VIRTIO_PCI_CONFIG_NOMSI) - -/* The remaining space is defined by each driver as the per-driver - * configuration space */ -#define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \ - VIRTIO_PCI_CONFIG_MSI : \ - VIRTIO_PCI_CONFIG_NOMSI) - -/* How many bits to shift physical queue address written to QUEUE_PFN. - * 12 is historical, and due to x86 page size. */ -#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 - -/* Flags track per-device state like workarounds for quirks in older guests. */ -#define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) - -/* QEMU doesn't strictly need write barriers since everything runs in - * lock-step. We'll leave the calls to wmb() in though to make it obvious for - * KVM or if kqemu gets SMP support. - */ -#define wmb() do { } while (0) - -/* HACK for virtio to determine if it's running a big endian guest */ -bool virtio_is_big_endian(void); - -/* virtio device */ -/* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */ -static inline VirtIOPCIProxy *to_virtio_pci_proxy(DeviceState *d) -{ - return container_of(d, VirtIOPCIProxy, pci_dev.qdev); -} - -/* DeviceState to VirtIOPCIProxy. Note: used on datapath, - * be careful and test performance if you change this. - */ -static inline VirtIOPCIProxy *to_virtio_pci_proxy_fast(DeviceState *d) -{ - return container_of(d, VirtIOPCIProxy, pci_dev.qdev); -} - -static void virtio_pci_notify(DeviceState *d, uint16_t vector) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy_fast(d); - if (msix_enabled(&proxy->pci_dev)) - msix_notify(&proxy->pci_dev, vector); - else - qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); -} - -static void virtio_pci_save_config(DeviceState *d, QEMUFile *f) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - pci_device_save(&proxy->pci_dev, f); - msix_save(&proxy->pci_dev, f); - if (msix_present(&proxy->pci_dev)) - qemu_put_be16(f, proxy->vdev->config_vector); -} - -static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - if (msix_present(&proxy->pci_dev)) - qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); -} - -static int virtio_pci_load_config(DeviceState *d, QEMUFile *f) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - int ret; - ret = pci_device_load(&proxy->pci_dev, f); - if (ret) { - return ret; - } - msix_unuse_all_vectors(&proxy->pci_dev); - msix_load(&proxy->pci_dev, f); - if (msix_present(&proxy->pci_dev)) { - qemu_get_be16s(f, &proxy->vdev->config_vector); - } else { - proxy->vdev->config_vector = VIRTIO_NO_VECTOR; - } - if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) { - return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector); - } - return 0; -} - -static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - uint16_t vector; - if (msix_present(&proxy->pci_dev)) { - qemu_get_be16s(f, &vector); - } else { - vector = VIRTIO_NO_VECTOR; - } - virtio_queue_set_vector(proxy->vdev, n, vector); - if (vector != VIRTIO_NO_VECTOR) { - return msix_vector_use(&proxy->pci_dev, vector); - } - return 0; -} - -static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, - int n, bool assign, bool set_handler) -{ - VirtQueue *vq = virtio_get_queue(proxy->vdev, n); - EventNotifier *notifier = virtio_queue_get_host_notifier(vq); - int r = 0; - - if (assign) { - r = event_notifier_init(notifier, 1); - if (r < 0) { - error_report("%s: unable to init event notifier: %d", - __func__, r); - return r; - } - virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler); - memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, - true, n, notifier); - } else { - memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2, - true, n, notifier); - virtio_queue_set_host_notifier_fd_handler(vq, false, false); - event_notifier_cleanup(notifier); - } - return r; -} - -static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) -{ - int n, r; - - if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) || - proxy->ioeventfd_disabled || - proxy->ioeventfd_started) { - return; - } - - for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { - if (!virtio_queue_get_num(proxy->vdev, n)) { - continue; - } - - r = virtio_pci_set_host_notifier_internal(proxy, n, true, true); - if (r < 0) { - goto assign_error; - } - } - proxy->ioeventfd_started = true; - return; - -assign_error: - while (--n >= 0) { - if (!virtio_queue_get_num(proxy->vdev, n)) { - continue; - } - - r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); - assert(r >= 0); - } - proxy->ioeventfd_started = false; - error_report("%s: failed. Fallback to a userspace (slower).", __func__); -} - -static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) -{ - int r; - int n; - - if (!proxy->ioeventfd_started) { - return; - } - - for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { - if (!virtio_queue_get_num(proxy->vdev, n)) { - continue; - } - - r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); - assert(r >= 0); - } - proxy->ioeventfd_started = false; -} - -static void virtio_pci_reset(DeviceState *d) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - virtio_pci_stop_ioeventfd(proxy); - virtio_reset(proxy->vdev); - msix_unuse_all_vectors(&proxy->pci_dev); - proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; -} - -static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) -{ - VirtIOPCIProxy *proxy = opaque; - VirtIODevice *vdev = proxy->vdev; - hwaddr pa; - - switch (addr) { - case VIRTIO_PCI_GUEST_FEATURES: - /* Guest does not negotiate properly? We have to assume nothing. */ - if (val & (1 << VIRTIO_F_BAD_FEATURE)) { - val = vdev->bad_features ? vdev->bad_features(vdev) : 0; - } - virtio_set_features(vdev, val); - break; - case VIRTIO_PCI_QUEUE_PFN: - pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; - if (pa == 0) { - virtio_pci_stop_ioeventfd(proxy); - virtio_reset(proxy->vdev); - msix_unuse_all_vectors(&proxy->pci_dev); - } - else - virtio_queue_set_addr(vdev, vdev->queue_sel, pa); - break; - case VIRTIO_PCI_QUEUE_SEL: - if (val < VIRTIO_PCI_QUEUE_MAX) - vdev->queue_sel = val; - break; - case VIRTIO_PCI_QUEUE_NOTIFY: - if (val < VIRTIO_PCI_QUEUE_MAX) { - virtio_queue_notify(vdev, val); - } - break; - case VIRTIO_PCI_STATUS: - if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) { - virtio_pci_stop_ioeventfd(proxy); - } - - virtio_set_status(vdev, val & 0xFF); - - if (val & VIRTIO_CONFIG_S_DRIVER_OK) { - virtio_pci_start_ioeventfd(proxy); - } - - if (vdev->status == 0) { - virtio_reset(proxy->vdev); - msix_unuse_all_vectors(&proxy->pci_dev); - } - - /* Linux before 2.6.34 sets the device as OK without enabling - the PCI device bus master bit. In this case we need to disable - some safety checks. */ - if ((val & VIRTIO_CONFIG_S_DRIVER_OK) && - !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { - proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; - } - break; - case VIRTIO_MSI_CONFIG_VECTOR: - msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); - /* Make it possible for guest to discover an error took place. */ - if (msix_vector_use(&proxy->pci_dev, val) < 0) - val = VIRTIO_NO_VECTOR; - vdev->config_vector = val; - break; - case VIRTIO_MSI_QUEUE_VECTOR: - msix_vector_unuse(&proxy->pci_dev, - virtio_queue_vector(vdev, vdev->queue_sel)); - /* Make it possible for guest to discover an error took place. */ - if (msix_vector_use(&proxy->pci_dev, val) < 0) - val = VIRTIO_NO_VECTOR; - virtio_queue_set_vector(vdev, vdev->queue_sel, val); - break; - default: - error_report("%s: unexpected address 0x%x value 0x%x", - __func__, addr, val); - break; - } -} - -static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr) -{ - VirtIODevice *vdev = proxy->vdev; - uint32_t ret = 0xFFFFFFFF; - - switch (addr) { - case VIRTIO_PCI_HOST_FEATURES: - ret = proxy->host_features; - break; - case VIRTIO_PCI_GUEST_FEATURES: - ret = vdev->guest_features; - break; - case VIRTIO_PCI_QUEUE_PFN: - ret = virtio_queue_get_addr(vdev, vdev->queue_sel) - >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; - break; - case VIRTIO_PCI_QUEUE_NUM: - ret = virtio_queue_get_num(vdev, vdev->queue_sel); - break; - case VIRTIO_PCI_QUEUE_SEL: - ret = vdev->queue_sel; - break; - case VIRTIO_PCI_STATUS: - ret = vdev->status; - break; - case VIRTIO_PCI_ISR: - /* reading from the ISR also clears it. */ - ret = vdev->isr; - vdev->isr = 0; - qemu_set_irq(proxy->pci_dev.irq[0], 0); - break; - case VIRTIO_MSI_CONFIG_VECTOR: - ret = vdev->config_vector; - break; - case VIRTIO_MSI_QUEUE_VECTOR: - ret = virtio_queue_vector(vdev, vdev->queue_sel); - break; - default: - break; - } - - return ret; -} - -static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, - unsigned size) -{ - VirtIOPCIProxy *proxy = opaque; - uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); - uint64_t val = 0; - if (addr < config) { - return virtio_ioport_read(proxy, addr); - } - addr -= config; - - switch (size) { - case 1: - val = virtio_config_readb(proxy->vdev, addr); - break; - case 2: - val = virtio_config_readw(proxy->vdev, addr); - if (virtio_is_big_endian()) { - val = bswap16(val); - } - break; - case 4: - val = virtio_config_readl(proxy->vdev, addr); - if (virtio_is_big_endian()) { - val = bswap32(val); - } - break; - } - return val; -} - -static void virtio_pci_config_write(void *opaque, hwaddr addr, - uint64_t val, unsigned size) -{ - VirtIOPCIProxy *proxy = opaque; - uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); - if (addr < config) { - virtio_ioport_write(proxy, addr, val); - return; - } - addr -= config; - /* - * Virtio-PCI is odd. Ioports are LE but config space is target native - * endian. - */ - switch (size) { - case 1: - virtio_config_writeb(proxy->vdev, addr, val); - break; - case 2: - if (virtio_is_big_endian()) { - val = bswap16(val); - } - virtio_config_writew(proxy->vdev, addr, val); - break; - case 4: - if (virtio_is_big_endian()) { - val = bswap32(val); - } - virtio_config_writel(proxy->vdev, addr, val); - break; - } -} - -static const MemoryRegionOps virtio_pci_config_ops = { - .read = virtio_pci_config_read, - .write = virtio_pci_config_write, - .impl = { - .min_access_size = 1, - .max_access_size = 4, - }, - .endianness = DEVICE_LITTLE_ENDIAN, -}; - -static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, - uint32_t val, int len) -{ - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - - pci_default_write_config(pci_dev, address, val, len); - - if (range_covers_byte(address, len, PCI_COMMAND) && - !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && - !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { - virtio_pci_stop_ioeventfd(proxy); - virtio_set_status(proxy->vdev, - proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); - } -} - -static unsigned virtio_pci_get_features(DeviceState *d) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - return proxy->host_features; -} - -static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy, - unsigned int queue_no, - unsigned int vector, - MSIMessage msg) -{ - VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; - int ret; - - if (irqfd->users == 0) { - ret = kvm_irqchip_add_msi_route(kvm_state, msg); - if (ret < 0) { - return ret; - } - irqfd->virq = ret; - } - irqfd->users++; - return 0; -} - -static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy, - unsigned int vector) -{ - VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; - if (--irqfd->users == 0) { - kvm_irqchip_release_virq(kvm_state, irqfd->virq); - } -} - -static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy, - unsigned int queue_no, - unsigned int vector) -{ - VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; - VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); - EventNotifier *n = virtio_queue_get_guest_notifier(vq); - int ret; - ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, irqfd->virq); - return ret; -} - -static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy, - unsigned int queue_no, - unsigned int vector) -{ - VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); - EventNotifier *n = virtio_queue_get_guest_notifier(vq); - VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; - int ret; - - ret = kvm_irqchip_remove_irqfd_notifier(kvm_state, n, irqfd->virq); - assert(ret == 0); -} - -static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs) -{ - PCIDevice *dev = &proxy->pci_dev; - VirtIODevice *vdev = proxy->vdev; - unsigned int vector; - int ret, queue_no; - MSIMessage msg; - - for (queue_no = 0; queue_no < nvqs; queue_no++) { - if (!virtio_queue_get_num(vdev, queue_no)) { - break; - } - vector = virtio_queue_vector(vdev, queue_no); - if (vector >= msix_nr_vectors_allocated(dev)) { - continue; - } - msg = msix_get_message(dev, vector); - ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg); - if (ret < 0) { - goto undo; - } - /* If guest supports masking, set up irqfd now. - * Otherwise, delay until unmasked in the frontend. - */ - if (proxy->vdev->guest_notifier_mask) { - ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); - if (ret < 0) { - kvm_virtio_pci_vq_vector_release(proxy, vector); - goto undo; - } - } - } - return 0; - -undo: - while (--queue_no >= 0) { - vector = virtio_queue_vector(vdev, queue_no); - if (vector >= msix_nr_vectors_allocated(dev)) { - continue; - } - if (proxy->vdev->guest_notifier_mask) { - kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); - } - kvm_virtio_pci_vq_vector_release(proxy, vector); - } - return ret; -} - -static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs) -{ - PCIDevice *dev = &proxy->pci_dev; - VirtIODevice *vdev = proxy->vdev; - unsigned int vector; - int queue_no; - - for (queue_no = 0; queue_no < nvqs; queue_no++) { - if (!virtio_queue_get_num(vdev, queue_no)) { - break; - } - vector = virtio_queue_vector(vdev, queue_no); - if (vector >= msix_nr_vectors_allocated(dev)) { - continue; - } - /* If guest supports masking, clean up irqfd now. - * Otherwise, it was cleaned when masked in the frontend. - */ - if (proxy->vdev->guest_notifier_mask) { - kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); - } - kvm_virtio_pci_vq_vector_release(proxy, vector); - } -} - -static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy, - unsigned int queue_no, - unsigned int vector, - MSIMessage msg) -{ - VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); - EventNotifier *n = virtio_queue_get_guest_notifier(vq); - VirtIOIRQFD *irqfd; - int ret = 0; - - if (proxy->vector_irqfd) { - irqfd = &proxy->vector_irqfd[vector]; - if (irqfd->msg.data != msg.data || irqfd->msg.address != msg.address) { - ret = kvm_irqchip_update_msi_route(kvm_state, irqfd->virq, msg); - if (ret < 0) { - return ret; - } - } - } - - /* If guest supports masking, irqfd is already setup, unmask it. - * Otherwise, set it up now. - */ - if (proxy->vdev->guest_notifier_mask) { - proxy->vdev->guest_notifier_mask(proxy->vdev, queue_no, false); - /* Test after unmasking to avoid losing events. */ - if (proxy->vdev->guest_notifier_pending && - proxy->vdev->guest_notifier_pending(proxy->vdev, queue_no)) { - event_notifier_set(n); - } - } else { - ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); - } - return ret; -} - -static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy, - unsigned int queue_no, - unsigned int vector) -{ - /* If guest supports masking, keep irqfd but mask it. - * Otherwise, clean it up now. - */ - if (proxy->vdev->guest_notifier_mask) { - proxy->vdev->guest_notifier_mask(proxy->vdev, queue_no, true); - } else { - kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); - } -} - -static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector, - MSIMessage msg) -{ - VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); - VirtIODevice *vdev = proxy->vdev; - int ret, queue_no; - - for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { - if (!virtio_queue_get_num(vdev, queue_no)) { - break; - } - if (virtio_queue_vector(vdev, queue_no) != vector) { - continue; - } - ret = virtio_pci_vq_vector_unmask(proxy, queue_no, vector, msg); - if (ret < 0) { - goto undo; - } - } - return 0; - -undo: - while (--queue_no >= 0) { - if (virtio_queue_vector(vdev, queue_no) != vector) { - continue; - } - virtio_pci_vq_vector_mask(proxy, queue_no, vector); - } - return ret; -} - -static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector) -{ - VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); - VirtIODevice *vdev = proxy->vdev; - int queue_no; - - for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { - if (!virtio_queue_get_num(vdev, queue_no)) { - break; - } - if (virtio_queue_vector(vdev, queue_no) != vector) { - continue; - } - virtio_pci_vq_vector_mask(proxy, queue_no, vector); - } -} - -static void virtio_pci_vector_poll(PCIDevice *dev, - unsigned int vector_start, - unsigned int vector_end) -{ - VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); - VirtIODevice *vdev = proxy->vdev; - int queue_no; - unsigned int vector; - EventNotifier *notifier; - VirtQueue *vq; - - for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { - if (!virtio_queue_get_num(vdev, queue_no)) { - break; - } - vector = virtio_queue_vector(vdev, queue_no); - if (vector < vector_start || vector >= vector_end || - !msix_is_masked(dev, vector)) { - continue; - } - vq = virtio_get_queue(vdev, queue_no); - notifier = virtio_queue_get_guest_notifier(vq); - if (vdev->guest_notifier_pending) { - if (vdev->guest_notifier_pending(vdev, queue_no)) { - msix_set_pending(dev, vector); - } - } else if (event_notifier_test_and_clear(notifier)) { - msix_set_pending(dev, vector); - } - } -} - -static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign, - bool with_irqfd) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - VirtQueue *vq = virtio_get_queue(proxy->vdev, n); - EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); - - if (assign) { - int r = event_notifier_init(notifier, 0); - if (r < 0) { - return r; - } - virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); - } else { - virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); - event_notifier_cleanup(notifier); - } - - return 0; -} - -static bool virtio_pci_query_guest_notifiers(DeviceState *d) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - return msix_enabled(&proxy->pci_dev); -} - -static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - VirtIODevice *vdev = proxy->vdev; - int r, n; - bool with_irqfd = msix_enabled(&proxy->pci_dev) && - kvm_msi_via_irqfd_enabled(); - - nvqs = MIN(nvqs, VIRTIO_PCI_QUEUE_MAX); - - /* When deassigning, pass a consistent nvqs value - * to avoid leaking notifiers. - */ - assert(assign || nvqs == proxy->nvqs_with_notifiers); - - proxy->nvqs_with_notifiers = nvqs; - - /* Must unset vector notifier while guest notifier is still assigned */ - if ((proxy->vector_irqfd || vdev->guest_notifier_mask) && !assign) { - msix_unset_vector_notifiers(&proxy->pci_dev); - if (proxy->vector_irqfd) { - kvm_virtio_pci_vector_release(proxy, nvqs); - g_free(proxy->vector_irqfd); - proxy->vector_irqfd = NULL; - } - } - - for (n = 0; n < nvqs; n++) { - if (!virtio_queue_get_num(vdev, n)) { - break; - } - - r = virtio_pci_set_guest_notifier(d, n, assign, - kvm_msi_via_irqfd_enabled()); - if (r < 0) { - goto assign_error; - } - } - - /* Must set vector notifier after guest notifier has been assigned */ - if ((with_irqfd || vdev->guest_notifier_mask) && assign) { - if (with_irqfd) { - proxy->vector_irqfd = - g_malloc0(sizeof(*proxy->vector_irqfd) * - msix_nr_vectors_allocated(&proxy->pci_dev)); - r = kvm_virtio_pci_vector_use(proxy, nvqs); - if (r < 0) { - goto assign_error; - } - } - r = msix_set_vector_notifiers(&proxy->pci_dev, - virtio_pci_vector_unmask, - virtio_pci_vector_mask, - virtio_pci_vector_poll); - if (r < 0) { - goto notifiers_error; - } - } - - return 0; - -notifiers_error: - if (with_irqfd) { - assert(assign); - kvm_virtio_pci_vector_release(proxy, nvqs); - } - -assign_error: - /* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */ - assert(assign); - while (--n >= 0) { - virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd); - } - return r; -} - -static int virtio_pci_set_host_notifier(DeviceState *d, int n, bool assign) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - - /* Stop using ioeventfd for virtqueue kick if the device starts using host - * notifiers. This makes it easy to avoid stepping on each others' toes. - */ - proxy->ioeventfd_disabled = assign; - if (assign) { - virtio_pci_stop_ioeventfd(proxy); - } - /* We don't need to start here: it's not needed because backend - * currently only stops on status change away from ok, - * reset, vmstop and such. If we do add code to start here, - * need to check vmstate, device state etc. */ - return virtio_pci_set_host_notifier_internal(proxy, n, assign, false); -} - -static void virtio_pci_vmstate_change(DeviceState *d, bool running) -{ - VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - - if (running) { - /* Try to find out if the guest has bus master disabled, but is - in ready state. Then we have a buggy guest OS. */ - if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) && - !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { - proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; - } - virtio_pci_start_ioeventfd(proxy); - } else { - virtio_pci_stop_ioeventfd(proxy); - } -} - -static const VirtIOBindings virtio_pci_bindings = { - .notify = virtio_pci_notify, - .save_config = virtio_pci_save_config, - .load_config = virtio_pci_load_config, - .save_queue = virtio_pci_save_queue, - .load_queue = virtio_pci_load_queue, - .get_features = virtio_pci_get_features, - .query_guest_notifiers = virtio_pci_query_guest_notifiers, - .set_host_notifier = virtio_pci_set_host_notifier, - .set_guest_notifiers = virtio_pci_set_guest_notifiers, - .vmstate_change = virtio_pci_vmstate_change, -}; - -void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev) -{ - uint8_t *config; - uint32_t size; - - proxy->vdev = vdev; - - config = proxy->pci_dev.config; - - if (proxy->class_code) { - pci_config_set_class(config, proxy->class_code); - } - pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, - pci_get_word(config + PCI_VENDOR_ID)); - pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); - config[PCI_INTERRUPT_PIN] = 1; - - if (vdev->nvectors && - msix_init_exclusive_bar(&proxy->pci_dev, vdev->nvectors, 1)) { - vdev->nvectors = 0; - } - - proxy->pci_dev.config_write = virtio_write_config; - - size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; - if (size & (size-1)) - size = 1 << qemu_fls(size); - - memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, - "virtio-pci", size); - pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, - &proxy->bar); - - if (!kvm_has_many_ioeventfds()) { - proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; - } - - virtio_bind_device(vdev, &virtio_pci_bindings, DEVICE(proxy)); - proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; - proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; - proxy->host_features = vdev->get_features(vdev, proxy->host_features); -} - -static void virtio_exit_pci(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - - memory_region_destroy(&proxy->bar); - msix_uninit_exclusive_bar(pci_dev); -} - -static int virtio_serial_init_pci(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - VirtIODevice *vdev; - - if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER && - proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */ - proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */ - proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; - - vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); - if (!vdev) { - return -1; - } - - /* backwards-compatibility with machines that were created with - DEV_NVECTORS_UNSPECIFIED */ - vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED - ? proxy->serial.max_virtserial_ports + 1 - : proxy->nvectors; - virtio_init_pci(proxy, vdev); - proxy->nvectors = vdev->nvectors; - return 0; -} - -static void virtio_serial_exit_pci(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - - virtio_pci_stop_ioeventfd(proxy); - virtio_serial_exit(proxy->vdev); - virtio_exit_pci(pci_dev); -} - -static int virtio_net_init_pci(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - VirtIODevice *vdev; - - vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net, - proxy->host_features); - - vdev->nvectors = proxy->nvectors; - virtio_init_pci(proxy, vdev); - - /* make the actual value visible */ - proxy->nvectors = vdev->nvectors; - return 0; -} - -static void virtio_net_exit_pci(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - - virtio_pci_stop_ioeventfd(proxy); - virtio_net_exit(proxy->vdev); - virtio_exit_pci(pci_dev); -} - -static int virtio_rng_init_pci(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - VirtIODevice *vdev; - - if (proxy->rng.rng == NULL) { - proxy->rng.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM)); - - object_property_add_child(OBJECT(pci_dev), - "default-backend", - OBJECT(proxy->rng.default_backend), - NULL); - - object_property_set_link(OBJECT(pci_dev), - OBJECT(proxy->rng.default_backend), - "rng", NULL); - } - - vdev = virtio_rng_init(&pci_dev->qdev, &proxy->rng); - if (!vdev) { - return -1; - } - virtio_init_pci(proxy, vdev); - return 0; -} - -static void virtio_rng_exit_pci(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - - virtio_pci_stop_ioeventfd(proxy); - virtio_rng_exit(proxy->vdev); - virtio_exit_pci(pci_dev); -} - -static Property virtio_net_properties[] = { - DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), - DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), - DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), - DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), - DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, net.txtimer, TX_TIMER_INTERVAL), - DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy, net.txburst, TX_BURST), - DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx), - DEFINE_PROP_END_OF_LIST(), -}; - -static void virtio_net_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); - - k->init = virtio_net_init_pci; - k->exit = virtio_net_exit_pci; - k->romfile = "efi-virtio.rom"; - k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; - k->device_id = PCI_DEVICE_ID_VIRTIO_NET; - k->revision = VIRTIO_PCI_ABI_VERSION; - k->class_id = PCI_CLASS_NETWORK_ETHERNET; - dc->reset = virtio_pci_reset; - dc->props = virtio_net_properties; -} - -static const TypeInfo virtio_net_info = { - .name = "virtio-net-pci", - .parent = TYPE_PCI_DEVICE, - .instance_size = sizeof(VirtIOPCIProxy), - .class_init = virtio_net_class_init, -}; - -static Property virtio_serial_properties[] = { - DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), - DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), - DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), - DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), - DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, serial.max_virtserial_ports, 31), - DEFINE_PROP_END_OF_LIST(), -}; - -static void virtio_serial_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); - - k->init = virtio_serial_init_pci; - k->exit = virtio_serial_exit_pci; - k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; - k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; - k->revision = VIRTIO_PCI_ABI_VERSION; - k->class_id = PCI_CLASS_COMMUNICATION_OTHER; - dc->reset = virtio_pci_reset; - dc->props = virtio_serial_properties; -} - -static const TypeInfo virtio_serial_info = { - .name = "virtio-serial-pci", - .parent = TYPE_PCI_DEVICE, - .instance_size = sizeof(VirtIOPCIProxy), - .class_init = virtio_serial_class_init, -}; - -static void virtio_rng_initfn(Object *obj) -{ - PCIDevice *pci_dev = PCI_DEVICE(obj); - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - - object_property_add_link(obj, "rng", TYPE_RNG_BACKEND, - (Object **)&proxy->rng.rng, NULL); -} - -static Property virtio_rng_properties[] = { - DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), - /* Set a default rate limit of 2^47 bytes per minute or roughly 2TB/s. If - you have an entropy source capable of generating more entropy than this - and you can pass it through via virtio-rng, then hats off to you. Until - then, this is unlimited for all practical purposes. - */ - DEFINE_PROP_UINT64("max-bytes", VirtIOPCIProxy, rng.max_bytes, INT64_MAX), - DEFINE_PROP_UINT32("period", VirtIOPCIProxy, rng.period_ms, 1 << 16), - DEFINE_PROP_END_OF_LIST(), -}; - -static void virtio_rng_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); - - k->init = virtio_rng_init_pci; - k->exit = virtio_rng_exit_pci; - k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; - k->device_id = PCI_DEVICE_ID_VIRTIO_RNG; - k->revision = VIRTIO_PCI_ABI_VERSION; - k->class_id = PCI_CLASS_OTHERS; - dc->reset = virtio_pci_reset; - dc->props = virtio_rng_properties; -} - -static const TypeInfo virtio_rng_info = { - .name = "virtio-rng-pci", - .parent = TYPE_PCI_DEVICE, - .instance_size = sizeof(VirtIOPCIProxy), - .instance_init = virtio_rng_initfn, - .class_init = virtio_rng_class_init, -}; - -#ifdef CONFIG_VIRTFS -static int virtio_9p_init_pci(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); - VirtIODevice *vdev; - - vdev = virtio_9p_init(&pci_dev->qdev, &proxy->fsconf); - vdev->nvectors = proxy->nvectors; - virtio_init_pci(proxy, vdev); - /* make the actual value visible */ - proxy->nvectors = vdev->nvectors; - return 0; -} - -static Property virtio_9p_properties[] = { - DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), - DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), - DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), - DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag), - DEFINE_PROP_STRING("fsdev", VirtIOPCIProxy, fsconf.fsdev_id), - DEFINE_PROP_END_OF_LIST(), -}; - -static void virtio_9p_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); - - k->init = virtio_9p_init_pci; - k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; - k->device_id = PCI_DEVICE_ID_VIRTIO_9P; - k->revision = VIRTIO_PCI_ABI_VERSION; - k->class_id = 0x2; - dc->props = virtio_9p_properties; - dc->reset = virtio_pci_reset; -} - -static const TypeInfo virtio_9p_info = { - .name = "virtio-9p-pci", - .parent = TYPE_PCI_DEVICE, - .instance_size = sizeof(VirtIOPCIProxy), - .class_init = virtio_9p_class_init, -}; -#endif - -/* - * virtio-pci: This is the PCIDevice which has a virtio-pci-bus. - */ - -/* This is called by virtio-bus just after the device is plugged. */ -static void virtio_pci_device_plugged(DeviceState *d) -{ - VirtIOPCIProxy *proxy = VIRTIO_PCI(d); - VirtioBusState *bus = &proxy->bus; - uint8_t *config; - uint32_t size; - - proxy->vdev = bus->vdev; - - config = proxy->pci_dev.config; - if (proxy->class_code) { - pci_config_set_class(config, proxy->class_code); - } - pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, - pci_get_word(config + PCI_VENDOR_ID)); - pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus)); - config[PCI_INTERRUPT_PIN] = 1; - - if (proxy->nvectors && - msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors, 1)) { - proxy->nvectors = 0; - } - - proxy->pci_dev.config_write = virtio_write_config; - - size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) - + virtio_bus_get_vdev_config_len(bus); - if (size & (size - 1)) { - size = 1 << qemu_fls(size); - } - - memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, - "virtio-pci", size); - pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, - &proxy->bar); - - if (!kvm_has_many_ioeventfds()) { - proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; - } - - proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; - proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; - proxy->host_features = virtio_bus_get_vdev_features(bus, - proxy->host_features); -} - -static int virtio_pci_init(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev); - VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev); - virtio_pci_bus_new(&dev->bus, dev); - if (k->init != NULL) { - return k->init(dev); - } - return 0; -} - -static void virtio_pci_exit(PCIDevice *pci_dev) -{ - VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev); - virtio_pci_stop_ioeventfd(proxy); - virtio_exit_pci(pci_dev); -} - -/* - * This will be renamed virtio_pci_reset at the end of the series. - * virtio_pci_reset is still in use at this moment. - */ -static void virtio_pci_rst(DeviceState *qdev) -{ - VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev); - VirtioBusState *bus = VIRTIO_BUS(&proxy->bus); - virtio_pci_stop_ioeventfd(proxy); - virtio_bus_reset(bus); - msix_unuse_all_vectors(&proxy->pci_dev); - proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; -} - -static void virtio_pci_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); - - k->init = virtio_pci_init; - k->exit = virtio_pci_exit; - k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; - k->revision = VIRTIO_PCI_ABI_VERSION; - k->class_id = PCI_CLASS_OTHERS; - dc->reset = virtio_pci_rst; -} - -static const TypeInfo virtio_pci_info = { - .name = TYPE_VIRTIO_PCI, - .parent = TYPE_PCI_DEVICE, - .instance_size = sizeof(VirtIOPCIProxy), - .class_init = virtio_pci_class_init, - .class_size = sizeof(VirtioPCIClass), - .abstract = true, -}; - -/* virtio-blk-pci */ - -static Property virtio_blk_pci_properties[] = { - DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), - DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, - VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), - DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), -#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE - DEFINE_PROP_BIT("x-data-plane", VirtIOBlkPCI, blk.data_plane, 0, false), -#endif - DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), - DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkPCI, blk), - DEFINE_PROP_END_OF_LIST(), -}; - -static int virtio_blk_pci_init(VirtIOPCIProxy *vpci_dev) -{ - VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev); - DeviceState *vdev = DEVICE(&dev->vdev); - virtio_blk_set_conf(vdev, &(dev->blk)); - qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); - if (qdev_init(vdev) < 0) { - return -1; - } - return 0; -} - -static void virtio_blk_pci_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); - PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); - - dc->props = virtio_blk_pci_properties; - k->init = virtio_blk_pci_init; - pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; - pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; - pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; - pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; -} - -static void virtio_blk_pci_instance_init(Object *obj) -{ - VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj); - object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK); - object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); -} - -static const TypeInfo virtio_blk_pci_info = { - .name = TYPE_VIRTIO_BLK_PCI, - .parent = TYPE_VIRTIO_PCI, - .instance_size = sizeof(VirtIOBlkPCI), - .instance_init = virtio_blk_pci_instance_init, - .class_init = virtio_blk_pci_class_init, -}; - -/* virtio-scsi-pci */ - -static Property virtio_scsi_pci_properties[] = { - DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, - VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), - DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, - DEV_NVECTORS_UNSPECIFIED), - DEFINE_VIRTIO_SCSI_FEATURES(VirtIOPCIProxy, host_features), - DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIPCI, vdev.conf), - DEFINE_PROP_END_OF_LIST(), -}; - -static int virtio_scsi_pci_init_pci(VirtIOPCIProxy *vpci_dev) -{ - VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev); - DeviceState *vdev = DEVICE(&dev->vdev); - - if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { - vpci_dev->nvectors = dev->vdev.conf.num_queues + 3; - } - - qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); - if (qdev_init(vdev) < 0) { - return -1; - } - return 0; -} - -static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); - PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); - k->init = virtio_scsi_pci_init_pci; - dc->props = virtio_scsi_pci_properties; - pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; - pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; - pcidev_k->revision = 0x00; - pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; -} - -static void virtio_scsi_pci_instance_init(Object *obj) -{ - VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj); - object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI); - object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); -} - -static const TypeInfo virtio_scsi_pci_info = { - .name = TYPE_VIRTIO_SCSI_PCI, - .parent = TYPE_VIRTIO_PCI, - .instance_size = sizeof(VirtIOSCSIPCI), - .instance_init = virtio_scsi_pci_instance_init, - .class_init = virtio_scsi_pci_class_init, -}; - -/* virtio-balloon-pci */ - -static Property virtio_balloon_pci_properties[] = { - DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), - DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), - DEFINE_PROP_END_OF_LIST(), -}; - -static int virtio_balloon_pci_init(VirtIOPCIProxy *vpci_dev) -{ - VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev); - DeviceState *vdev = DEVICE(&dev->vdev); - - if (vpci_dev->class_code != PCI_CLASS_OTHERS && - vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */ - vpci_dev->class_code = PCI_CLASS_OTHERS; - } - - qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); - if (qdev_init(vdev) < 0) { - return -1; - } - return 0; -} - -static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); - PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); - k->init = virtio_balloon_pci_init; - dc->props = virtio_balloon_pci_properties; - pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; - pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; - pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; - pcidev_k->class_id = PCI_CLASS_OTHERS; -} - -static void virtio_balloon_pci_instance_init(Object *obj) -{ - VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj); - object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BALLOON); - object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); -} - -static const TypeInfo virtio_balloon_pci_info = { - .name = TYPE_VIRTIO_BALLOON_PCI, - .parent = TYPE_VIRTIO_PCI, - .instance_size = sizeof(VirtIOBalloonPCI), - .instance_init = virtio_balloon_pci_instance_init, - .class_init = virtio_balloon_pci_class_init, -}; - -/* virtio-pci-bus */ - -void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev) -{ - DeviceState *qdev = DEVICE(dev); - BusState *qbus; - qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_PCI_BUS, qdev, NULL); - qbus = BUS(bus); - qbus->allow_hotplug = 1; -} - -static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) -{ - BusClass *bus_class = BUS_CLASS(klass); - VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); - bus_class->max_dev = 1; - k->notify = virtio_pci_notify; - k->save_config = virtio_pci_save_config; - k->load_config = virtio_pci_load_config; - k->save_queue = virtio_pci_save_queue; - k->load_queue = virtio_pci_load_queue; - k->get_features = virtio_pci_get_features; - k->query_guest_notifiers = virtio_pci_query_guest_notifiers; - k->set_host_notifier = virtio_pci_set_host_notifier; - k->set_guest_notifiers = virtio_pci_set_guest_notifiers; - k->vmstate_change = virtio_pci_vmstate_change; - k->device_plugged = virtio_pci_device_plugged; -} - -static const TypeInfo virtio_pci_bus_info = { - .name = TYPE_VIRTIO_PCI_BUS, - .parent = TYPE_VIRTIO_BUS, - .instance_size = sizeof(VirtioPCIBusState), - .class_init = virtio_pci_bus_class_init, -}; - -static void virtio_pci_register_types(void) -{ - type_register_static(&virtio_net_info); - type_register_static(&virtio_serial_info); - type_register_static(&virtio_rng_info); - type_register_static(&virtio_pci_bus_info); - type_register_static(&virtio_pci_info); -#ifdef CONFIG_VIRTFS - type_register_static(&virtio_9p_info); -#endif - type_register_static(&virtio_blk_pci_info); - type_register_static(&virtio_scsi_pci_info); - type_register_static(&virtio_balloon_pci_info); -} - -type_init(virtio_pci_register_types) |